Answer :
Final answer:
The camshaft action is transmitted to the valves by the cam followers, which directly engage with the cams on the camshaft to open and close the valves appropriately during an engine cycle.
Explanation:
The action of the camshaft is transmitted to the valves by the cam followers. The cam followers, in an engine, ride up and down as the camshaft rotates, following the contour of the cams attached to the camshaft. This up and down motion then opens and closes the valves at the correct times during the engine cycle for intake and exhaust.
The crankshaft and camshaft are linked such that for every turn of the crankshaft, the camshaft turns half as many times. As the cam rotates, the follower tracks the shape of the cam and translates rotary motion into linear motion, which then operates the valves. The valve springs, lifters, and rocker arms also play a role, but the cam followers are the most direct element in transmitting camshaft action to the valves.
